EP 3998434 A1 20220518 - COOLING SYSTEM, SURGE GENERATION PREVENTION DEVICE, SURGE GENERATION PREVENTION METHOD, AND SURGE GENERATION PREVENTION PROGRAM
Title (en)
COOLING SYSTEM, SURGE GENERATION PREVENTION DEVICE, SURGE GENERATION PREVENTION METHOD, AND SURGE GENERATION PREVENTION PROGRAM
Title (de)
KÜHLSYSTEM, VORRICHTUNG ZUR VERHINDERUNG VON STOSSWELLEN, VERFAHREN ZUR VERHINDERUNG VON STOSSWELLEN UND PROGRAMM ZUR VERHINDERUNG VON STOSSWELLEN
Title (fr)
SYSTÈME DE REFROIDISSEMENT, DISPOSITIF DE PRÉVENTION DE GÉNÉRATION DE SURTENSION, PROCÉDÉ DE PRÉVENTION DE GÉNÉRATION DE SURTENSION ET PROGRAMME DE PRÉVENTION DE GÉNÉRATION DE SURTENSION
Publication
Application
Priority
JP 2019027113 W 20190709
Abstract (en)
An object of this invention is to prevent the generation of a surge phenomenon in a compressor by being able to respond quickly even when the load of servers to be cooled changes rapidly. In the present invention, a local cooler (1) is positioned near a server (S) that serves as a heat source and is consequently able to directly receive heat from the server (S) and quickly change the state of a refrigerant in accordance with the heat of the server (S). The present invention is characterized by having refrigerant state detection means (6) that detects the state of a gas-phase refrigerant supplied from the local cooler (1), and a proportional control valve (8) and a high-speed on-off valve (9) that are provided in parallel with a bypass route (7) of a compressor (2) and operated on the basis of a refrigerant state ratio calculated from detection values of the refrigerant state detection means (6), the proportional control valve (8) is such that an opening degree is controlled in a stepwise manner on the basis of the refrigerant state ratio of the compressor (2), and the high-speed on-off valve (9) is operated to open and close on the basis of the refrigerant state ratio of the compressor (2) and is set to have a larger change in opening degree per unit time than the proportional control valve (8).
IPC 8 full level
F25B 1/00 (2006.01); F24F 7/06 (2006.01); G06F 1/20 (2006.01)
CPC (source: EP US)
F25B 49/005 (2013.01 - EP); F25B 49/02 (2013.01 - US); G06F 1/20 (2013.01 - EP); G06F 1/206 (2013.01 - EP); H05K 7/20354 (2013.01 - EP US); H05K 7/20827 (2013.01 - EP US); H05K 7/20836 (2013.01 - EP US); F25B 2400/0401 (2013.01 - EP); F25B 2600/0261 (2013.01 - EP); F25B 2600/2501 (2013.01 - EP US); F25B 2700/13 (2013.01 - US); F25B 2700/1931 (2013.01 - EP US); F25B 2700/1933 (2013.01 - EP US); G06F 2200/201 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3998434 A1 20220518; EP 3998434 A4 20220713; AU 2019456388 A1 20220203; JP 7251628 B2 20230404; JP WO2021005705 A1 20210114; US 2022279684 A1 20220901; WO 2021005705 A1 20210114
DOCDB simple family (application)
EP 19937129 A 20190709; AU 2019456388 A 20190709; JP 2019027113 W 20190709; JP 2021530392 A 20190709; US 201917624917 A 20190709